Latch for alpha molder&#39;s flask



Feb. 23, 1932. J.,SVOBODA. JR 1,846,769

LATCH FOR A MOLDERS FLASK Filed Nov 3, 1950 4g L (3 M99 Patented eb, 23,i932 P TENT]orrice mmm mm; .m, or WISCONSIN, assreiroa'ro BELLE cIrYMALLEA'BLE 1 jmoucoMrnNy,or mourn, Wiscons n, A ooaroanrron orWISQONSINQ LATCH FOR .A. ivrornnns FILASK, l

' Application filed November 3, 193C. Serial No. 492,953.

This 'lllVGIllilOIlz relates to a latch for a molders flask andespecially for the so called snap flasks whichhave a hin e atone cornerand a separable-latch at a diagonally opposite corner whereby the flasksidesmay .be removed laterally to free a mold without dis-' 'turbing thesand.

- lhe object of the invention is .to provide a, simple, inexpensivelatch capable of effec- 'tively and firmly holding the sides of thefiasktogether to form a, rigid corner. 7

' Another object is to interlock the parts of the latch in a specialmanner to produce the rigid corner mentioned. 4 7

Other objects will be apparent to those skilled in this art as thedisclosure is more fully made.

Briefly such desirable objects may be achieved by the form of theinvention s own in the accompanying sheet of drawings by way of example,wherein thelatch comprises two main, right angularly disposed latchparts carried by the flask sides, said two parts being interlocked andtightly clamped together by a third part comprising a pivoted wedgemember. So much willsuflice for the present, and in the meanwhilereference should be made to the figures of drawings in which: i

Figure 1 is a top plan, assembled view of the flask corner and latch;

Figure 2 is a side view of the latch as viewed from the right to theleft in Figure 1;

Figure 3 is a side view of thelatch looking at the other side shown inFigure 1; I

Figure 4 is a horizontal sectional view of a detail as seen along theline 4-& appearingin Figure 3; A t

Figure 5 is a top view of one of the latch parts;

Figure 6 is a side elevational view of the same latch part as shown inFigure 5;

Figure 7 is an'en'd view of a washer; and,

Figure 8 is a face view of the same washer.

Two sides of a conventional hinged flask are shown at 10 and 11 whichare adapted to meet and form a closed corner- 0f the flask as appears inFigurel.

A first latch part 12 is suitably secured to A wedge latch-member thesame; having at oneend a large opening ofth e-part 12 t V I t Inclampinglthe two 'flask sides together the outside surface of theflaskside 10, said partl2widening out where it crosses the end' of sidel1,said widened portion appearing at 13 and terminating in a vertical,tapered edge 1a. which projects laterallyof the end of side -l1as shownin Figure l. 'Midway'between its top and bottom edges this edge l l isformed with a notch ll' for a purpose later to appeara The narrowportion of this first latch par-t l2 hasintegrally formedthereon acircular boss 15, having two diametrically arranged'notches iii-formedtherein, for a purpose soon to appear.; V Y

17 is next provided whereby to mount said member 17 pivotally on thebosslf). A washer 18 is also provided to hold the member 17 i on its boss15, there being a screw l9to secure 3111*:026 said partsas' a unitassembly with the part l2 to the side 19 ind at mfi i ur llleid m l-;ly, the washer 18 carries two diametrically pqse l wa w c t. into thsnot hes her ci tw cr be ie r su t th washerv 18; is held,againstturning movement when the 1nember17 is pivoted. I To permit freepivotingfrom the member 17 it is best that the thickness of the part"17, be somewhat fless thian the thickness of the boss 15 wherebytoprovide: the required clearance as best apr e e in :1? isl s-4 7 T Pa tl? s b t c slightly -;-as 1. shown in' Figure .1 v and terminates mahook 20jhaving affing'er grip portlOIl QlZ A I T A- second latch part 22is securely fastened 'tothe flask side 11 said part having averticals'houlder 23 flushwith'the end of side "11, said part22 adjacentsaid shoulder carrying an integrally formed curled lip 2&1; forminga vertical socketthat receives the tapered edge 150f the part 12. Thepart22 also includes, a. projected hook part 25 which is designed tocooperate with the hook20 to V uwedge parts 12 and 22 together.The-exten-' sion. whichjbecomesf hook 25 ofipart 22 it is ofinterest tonote will seat'in the notch 1 4:

to form a rigid corner, as shown" in Figure'l proof latch is providedwhich achievesthe desirable'objects heretofore'recited; It is to ingthis theedge 1 1 of part 12 seats in the vertical socket provided by thecurled lip 24 in part 22. Still further the extension 25 of part 22 fitsinto andseats in the notch 1 1' of the part 12. Thus, a double interlockis provided: between the twomainlatch parts'l2 and 22. Next the pivotmember 17 is swung. downwardly to cause the hook 20 to ride across-.the.hook extension which wedges the interlocking" portions 'onipa'rts' 12,andj22 j very tightlyandsecurely together to form a solid, rigid cornerfor the flask Thus the sides 10 and 11 of the flask are held against alllateral movementas well as ;any' up and, down movement.

From this disclosure itwill'now-be appre ciated that'asecure,interlocked 'latchis provided which firmly clamps the. flask sidesectionstogether and so holdsthem during the sand ramming operation,said latch however permitting ready release of the sections when themold is to be removed.

' 7 It isnow apparent that a simple and foolbe particularly understoodthat this latch may be employed elsewhere than in connection with flasksas herein:disclo'sed and that it isthe intention to. coverall'changesand modifications which do not materially depart from the spirit andscope of the invention,

aforementioned curled lip, said latch member terminating in a hook tocooperate with the first mentioned hook in drawing the parts securelytogether.

3. The combination with theadj acent sides of a flask, of a latchstructure to' forma rigid corner lock'ior the sides; said latchstructure comprising a first part lying flatly against a side of theflask and secured thereto, said first .part terminating .'inj'a""tapered Vertical straight'edgewhich pro ects 'beyondithe adj agentsideof. the flask, said first part having a notch formed in saidstraight edge between its-ends, a second-part similarly secured to theadjacent flask side and having an outiwardly curled lip to provide avertical'groove formed 5 c0mp1emenmri1 wedgingl to receive'the straightedge-of said firstpart, said second part-including an extension' to fitin the notch aforementioned, sa-id' secondpart atits free extended endterminating inahook portion, a latch member pivotally earried*a'lon'gside said first l "part and provided with anbutwardly bowedportionto clear the curled lip', andsaid latch: member adapted towedgingly lock with the hook portion to clamp all 1 of the interlockingportions of the latch-structure securely together.

JosEPI-r svoBonA JR.'

which has been-defined in the-tollowing claims. j

What-is claimed is: 1. The combination with theadjacent sides "of aiflask, vofa latclrto form a'rigid corner lock 'for the sides', saidlatch comprising'a 'first part'secured to one side, said first partterminating in a projected-straightvertical edge, said partalsoincluding a notch, a' seco'nd 'part secured to the other side whichpart the other side' of the flask, and having an outwardly curled lip toprovide a" vertical groove throughout its wi'dthhavingataper 'wedginglyto receive the tapered edge'of the firstpart, saidsecond'part having anexten- "includes a curled lip to provide a vertical s'ocket to receivethe vertical edge of the first part and-anextension to-fit in the notchof I no sion to fit'thenotch in'the first part and also having at itsfree end a hook portion, a'bearing boss provided on theiflrst'member,and

alfatch member j ournaledon said bearing inc1uding"a"bowed' out portionto clear "the

